Hairpin



Jan. 19,` 1932. A B WEISSENBQRN 1,842,135

HAIRPIN Filed Sept. 22, 1930 l[llllllllllllllll v QLLH! v Patented Jan. 19, 1932 UNITED STATES VPAiEhrT OFFICE ALBERT B. WEIssENBoRN, or' APPLnToN, WISCONSIN,` AssICNoR To scoLnING LOCKS CoRPonA'r1oN,or APPLETON; WISCONSIN .'HLAIRPIN This invention relates to improvements in hairpins.

One of the objects of the present invention is to improve the ordinary type of hairpin to prevent the pin from being displaced while being worn.

Another object of the present invention is the provision of an improved type of hairpin which is constructed along the lines of the usual type of hairpin, but is provided along its top and bottom surfaces with transverse recesses produced by knurling the entire upper and lower surfaces of the pin whereby when the pin is inserted in the hair, a number vof the hairs will become engaged with this lnurled portion and prevent accidental displacement of the pin. o

With the above and other objects in view, the invention consists in the novel features of construction, the combination and arrangement of` parts hereinafter more fully set forth, pointed out in the claims and shown in the accompanying drawings wherein:

Figure l is an enlarged plan view of a hairpin constructed in accordance with my invention;

Figure 2 is an enlarged detail plan view` of one side of a hairpinl constructed in accordance with my invention; and,

Figure 3 is a side elevation of a portion of one side of a hairpin constructed in accordance with my invention;

Figure A is a detailed transverse sectional view.

Referring more particularly to the drawings, I have illustrated in an enlarged plan view, a hairpin constructed in accordance with my invention, and this hairpin is of the usual U-shaped type having its side portions 1 and 2 diverging from the' intermediate loop 3. The side portions are provided with the usual lateral offsets t which are arranged in staggered relation upon opposite sides of the pin, as shown in Figure 1, to provide the usual crimper portions for the pin.

In Figures 2 and 3, I have illustrated in plan and side views, respectively, andin these views, I have illustrated in enlarged construction, the side portions of the hairpin. The hairpin is passed through a knurling machinewhich provides the side portion with tapering transverse grooves or recesses 5, as shown in Figures 2 and 3, and these tapering grooves or recesses extend from the outside ofthe lowermost offset of the pin to the loop 3 on opposite sides of the pin. However, the inner and outer portions of the pin remain smooth as shown at 6.

The main advantage of knurling the opposite side portions of the hairpin is the fact that when the pin has been inserted in the hair and is brought to rest at the desired location, the fine hairs will engage within the grooves or recesses 5 and have a tendency to prevent the hairpin from being accidentally displaced from the wearers head.

It is believed that a hairpin construction in accordance with this invention will prove more beneficial than the ordina-ry smooth type of hairpin as the corrugation or recesses. formed by the knurling of the top and bottom of the pin will cause the pin to more quickly engage the hairs to prevent displacement of thepin than if the side portions of the pin'were perfectly smooth, as is the case with hairpins manufactured at the present time.

In view of the fact that the pin is made in the manner similar to the ordinary hairpin in use at the present time, it is knurled after 1 the entire construction has been carried out, and it is believed that this pin can be placed on the market and sold at a very low cost and will prove quite useful and beneficial for the purpose intended.

I -claim Y Y l. A hairpin having crimped portions intermediate the ends thereof and having opposed Vlnurled surfaces in the field of the crimped portions.

2. A hair pin having crimped portions arranged in staggered relation intermediate the ends thereof and having opposed surfaces knurled from the outer end of the crimped portions to the head of the pin.

3. A hairpin having a looped end and having crimped portions intermediate the ends of the legs thereof and arranged in staggered relation, and said legs having opposed sury, faces knurled in the eld of the crimped pori tions with the knurled surfaces extending to the looped end.

4E. A hairpin having the leg portions thereof provided with opposed knurled surfaces from the looped end of the pin to a point remote from the outer ends of the leg portions.

5. A U-shaped hairpin having crimped portions formed in the legs and arranged in staggered relation providing long and short straight portions between the crimped portions and the looped end and said crimped portions and straight portions having opposite sides thereof knurled to provide gripping surfaces.

In testimony that l claim the foregoing I have hereunto set my hand at Appleton, in the County of Outagamie and State of Wisconsin.

, ALBERT B. WEISSENBORN. 

